Chapter 8 - Intro To Metabolism

Question 1

What is the process that drives the cellular economy by extracting the energy stored in sugars and other fuels?

Answer 1

Cellular respiration

Question 2

• Define metabolism

- What does it arise from

Answer 2

• Metabolism is the totality of an organism’s chemical reactions.
• It arises from orderly interactions between molecules.

Question 3

A metabolic pathway begins with a ___________ which is then altered in a series of defined _________ resulting in a certain _________.

Answer 3

• specific molecule
• steps
• product

Question 4

By what are the reactions catalyzed?

Each step of the pathway is catalyzed by a specific one.

Answer 4

Enzymes

Question 5

• A degradative process that releases energy by breaking down complex molecules to simpler compounds.
• a major pathway is ____

Answer 5

• Catabolism
• Cellular respiration (sugar glucose and other organic fuels are broken down in the presence of oxygen to carbon dioxide and water)

Question 6

• pathways that consume energy to build complicated molecules from simpler ones

Answer 6

Anabolic pathways (or biosynthetic pathways)